Ring binder



FIG. 1 is a perspective view of an embodiment of the ring binder according to the present invention with rings closed;

FIG. 2 is a perspective view of a ring binder as in FIG. 1 with rings open;

FIG. 3 is a side view of the ring binder as in FIG. 1;

FIG. 4 is a top view of the ring binder as in FIG. 1;

FIG. 5 is a front view of the ring binder as in FIG. 1;

FIG. 6 is a side view of the ring binder as in FIG. 1;

FIG. 7 is a bottom view of the ring binder as in FIG. 1; and,

FIG. 8 is an end view of the ring binder as in FIG. 1. 

The ornamental design for a ring binder, as shown and described. 